396656 has 20 divisors (see below), whose sum is σ = 828072. Its totient is φ = 182976.

The previous prime is 396647. The next prime is 396667. The reversal of 396656 is 656693.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 746 + ... + 1161.

2³⁹⁶⁶⁵⁶ is an apocalyptic number.

It is an amenable number.

396656 is an abundant number, since it is smaller than the sum of its proper divisors (431416).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

396656 is a wasteful number, since it uses less digits than its factorization.

396656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1928 (or 1922 counting only the distinct ones).

The product of its digits is 29160, while the sum is 35.

The square root of 396656 is about 629.8063194348. The cubic root of 396656 is about 73.4747317772.

The spelling of 396656 in words is "three hundred ninety-six thousand, six hundred fifty-six".